11ustrated Guidelines for Rehabilitating Historic …

1 The Secretary of the Interior's standards for Rehabilitation & 11ustrated Guidelines for Rehabilitating Historic Buildings ~~ u .s. Department of the Interior National Park Service Cultural Resources Heritage Preservation Services The Secretary of the Interior's standards for Historic Preservation Projects with Guidelines for Applying the standards were written in 1976 by W. Brown Morton III and Gary L. Hume (the ten standards for Rehabili-tation and their Guidelines have been the most-used component of this larger document which also contains standards and Guidelines for acquisition, protection, stabilization, preservation, restoration, and reconstruc-tion). The Guidelines to the rehabilitation standards were revised and expanded in 1983 by Gary L.

2 Hume and Kay D . Weeks and issued together with the 1976 standards as a separate book entitled The Secretary of the Interior's standards for Rehabilitation with Guidelines for Applying the standards . The 1976 standards for Rehabilitation were revised in 1990 by Gary L. Hume, H. Ward Jandl,and Kay D. Weeks following a public commenting period. The Secretary of the Interior's Standard's for Rehabilitation and Illustrated Guidelines for Rehabilitating Historic Buildings / W. Brown Morton III .. ret ; Anne E. Grimmer and Kay D. Weeks, project directors. p. cm. Includes bibliographical references. 1. Architecture-United States-Conservation and restoration- standards . 2. Historic buildings-United States-Conservation and restoration- standards .

3 I. Morton, W. Brown. n. Grimmer, Anne III. Weeks, Kay D. N. United States. National Park Service. Preservation Assistance Division. V. Title: Illustrated Guidelines for Rehabilitating Historic buildings. 720' .28'8021873-dc20 91-27060 For sale by the . Government Printing Office Superintendent of Documents. Mail Stop: SSOP. WHshinglOn. DC 20402-932R ISBN 0-16-035979-1 CIP The Secretary of the Interior's standards for Rehabilitation & Illustrated Guidelines for Rehabilitating Historic Buildings W. BROWN MORTON III GARY KAY D. WEEKS H. WARD JANDL ANNE E. GRIMMER AND KAY D. WEEKS Project Directors Department of the Interior National Park Service Heritage Preservation Services Washington, D.

4 C. Reprinted 1997 Contents Acknowledgements 111 Building Interior Structural Systems 47 Foreword IV Building Interior The Secretary of the Interior's Spaces, Features, and Finishes 53 standards for Rehabilitation V Building Interior Guidelines for Rehabilitating Mechanical Systems 61 Historic Buildings Vlll Building Site 67 Building Exterior Masonry 1 Setting District or Neighborhood 75 Building Exterior Energy Conservation 83 Wood 9 New Additions Building Exterior to Historic Buildings 89 Architectural Metals 17 Accessibility Considerations 95 Building Exterior Roofs 23 Health and Safety Considerations 99 Building Exterior Windows 29 Appendix Building Exterior Entrances and Porches 35 technical Guidance Publications 105 Building Exterior Storefronts 41 Contents i 11 Photography Credits Photo Credit for Book Cover FrontlBack Covers.

5 Residential rehabilitation, Seattle, Washington. 1991. Mary Randlett. Photo Credits for Chapter Heads Building Exterior-Masonry. Jack E. Boucher, HABS. Building Exterior-Wood. Jack E. Boucher, HABS. Building Exterior-Architectural Metals. Cervin Robinson, HABS. Building Exterior-Roofs. Jack E. Boucher, HABS. Building Exterior-Windows. Jack E. Boucher, HABS. Building Exterior-Entrances and Porches. Jack E. Boucher, HABS. Building Exterior-Storefronts. Jack E. Boucher, HABS. Building Interior-Structural Systems. Cervin Robinson, HABS. Building Interior-Spaces, Features and Finishes. Brooks Photographers, HABS Collection. Building Interior-Mechanical Systems. National Park Service Files.

6 Building Site. Jack E. Boucher, HABS. Setting (District or Neighborhood). Charles Ashton. Energy Conservation. Laura A. Muckenfuss. New Additions to Historic Buildings. Rodney Gary. Accessibility Considerations. Department of Cultural Resources, Raleigh, North Carolina. Health and Safety Considerations. National Park Service Files. ! !, .. Acknowledgements The illustrated version of the standards and Guidelines for Rehabilitation was developed by the technical Preservation Services Branch, Preservation Assistance Division of the National Park Service. Project Directors Anne E. Grimmer and Ka yD. Weeks wish to thank those profes-sional staff members who assisted in the book's preparation by providing technical review of the text, conducting photo research, and taking photographs.

7 They include Michael J. Auer, Charles E. Fisher, Thomas C. Jester, Lauren G. Meier, ASLA, and Sharon C. Park, AlA. Tim Buehner prepared several technical draw-ings. Special thanks go to Jack E. Boucher and Catherine LaVoie of the Historic American Buildings Survey (HABS) who were especially helpful in conducting photographic research. Boucher's work appears throughout the book. Mary Randlett's photograph of ongoing rehabili-tation work is featured on the cover. All photographs and drawings included in this publication not individually credited have been selected from National Park Service Files. c o ] ;3 :;3 ~------------------------------~~ Acknowledgements iii HA BS Collection iv Foreword Foreword A banner year, 1991 marks the 75th anniversary of the National Park Service as well as 25 years of preservation achievements resulting from passage of the National Historic Preservation Act of 1966.

8 Publication of the illustrated Guide-lines for Rehabilitating Historic Buildings fittingly coincides with the celebration of this important Act that created our Na-tional Register programs and established a solid Federal/State partnership nation-wide. Since 1966, over 800,000 properties have been placed in the National Register of Historic Places through the joint efforts of State Historic Preservation Offices, Federal agencies, Certified Local Govern-ments, and the private sector. Over the past quarter century, Historic preservation grants to the States for survey, planning and rehabilitation have amounted to nearly $600 million, an investment total-ing close to $ billion with the inclusion of matching non-Federal funds.

9 Addition-ally, the Preservation Tax Incentives, now in their 14th year, have contributed to the rehabilitation of nearly 22,000 Historic properties, representing an investment of almost $15 billion in private funds. The Secretary of the Interior's standards are of particular relevance here because they have been used to determine the appropriateness of work treatments for every grant-in-aid and Tax Act project over a 25-year period. By emphasizing repair over replacement, and limited rather than wholesale change to accom-modate new uses, the standards and their accompanying Guidelines seek to ensure the preservation of those qualities for which each property was listed in the National Register.

10 Finally, this illustrated version of the Guidelines for Rehabilitating Historic Buildings has been designed to enhance overall understanding of basic preserva-tion principles. Showing specific examples of appropriate treatments as well as the consequences of inappropriate treatments is just another aspect of a sustained effort to encourage the most respectful ap-proaches possible in Rehabilitating our nation's irreplaceable Historic properties. The Secretary of the Interior's standards for Rehabilitation Introduction to the standards The Secretary of the Interior is responsible for establishing standards for all programs under Departmental authority and for advising Federal agencies on the preserva-tion of Historic properties listed in or eligible for listing in the National Register of His-toric Places.